/Engine/Source/Editor/UnrealEd/Public/Commandlets/AssetRegistryGenerator.h
FinalizeChunkIDs Create the list of packages to store in each Chunk; each Chunk corresponds to a pak file, or group of pak files if the chunk is split. Each package may be in multiple chunks. The selection of chunks for each package is based on ChunkIds explicitly assigned to the package in the editor (UPackage::GetChunkIds()) and on assignment rules defined by the AssetManager
void FinalizeChunkIDs ( const [TSet](API\Runtime\Core\Containers\TSet)< [FName](API\Runtime\Core\UObject\FName) > & CookedPackages, const [TSet](API\Runtime\Core\Containers\TSet)< [FName](API\Runtime\Core\UObject\FName) > & DevelopmentOnlyPackages, [FSandboxPlatformFile](API\Runtime\SandboxFile\FSandboxPlatformFile) & InSandboxFile, bool bGenerateStreamingInstallManifest )